Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van hanh » van thanh, ban hanh, van anh
sach ty » sach y, sach tu, sach thu
tai cua » thai cua, tai cuc, tri cua
va hanh » va thanh, va danh, ban hanh
su sach » so sach, vu sach
ve chao » ve chat, ve cho, ve chang
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
ve cham » va cham, ve chat, vu cham

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty nang xa hoi. hieu ((ve chao) OR (ve cham)) xu ((va hanh) or (van hanh)) tai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang xa hoi. hieu ((ve chao) OR (ve cham)) xu ((va hanh) OR (van hanh)) tai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty nang xa hoi. hieu ((ve chao) OR (ve cham)) xu ((va hanh) or (van hanh)) tai cua triet".
• Adding a wildcard symbol may retrieve word variants: su sach ty nang xa hoi. hieu ((ve chao) OR (ve cham)) xu ((va hanh) or (van hanh)) tai cua triet*.